oil motor store - #1:Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT (Packaging May Vary)
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Great oil for GDI engines
This particular Valvoline oil is formulated to reduce intake valve deposits on GDI engines. I have been using it on several Hyundai GDI engines over the last four years and idle quality, smoothness of running are both good. As a maintenance function I do a proper CDC intake valve cleaning every 15K miles. See no change in performance/mileage with the engine so I presume there is little build up on the intake valves. On previously used oils I was getting a rough idle and stumble if I didn't run the CDC cleaner every 10K miles. Short of pulling the intake manifold and scoping the back side of the valves I can only presume this oil is helping with the typical GDI intake valve deposit build up.
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